I have only had my truck for about 2 weeks and I cant figure out that the little button on the rearview mirror does? I know its auto dimming.. so does this turn the auto dimmer on and off, or does it do something else? its a 97 ecsb sport
No such thing as a stupid question! Your probably right, just an auto dimmer it might be in your owners manual otherwise if there is no manual lever it most likely is.